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\begin{equation*}\frac{3}{4} \cdot \left( \frac{2}{5} + \frac{2}{3} \right) = \frac{3}{4} \cdot \left( \frac{6}{15} + \frac{10}{15} \right) = \frac{3}{4} \cdot \frac{16}{15} = \frac{\strike{3}1}{4} \cdot \frac{16}{15} = \frac{4}{5}\end{equation*}
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